Examples of java.awt.GradientPaint

java.awt.GradientPaint
The GradientPaint class provides a way to fill a {@link Shape} with a linear color gradient pattern.If {@link Point} P1 with {@link Color} C1 and Point P2 withColor C2 are specified in user space, the Color on the P1, P2 connecting line is proportionally changed from C1 to C2. Any point P not on the extended P1, P2 connecting line has the color of the point P' that is the perpendicular projection of P on the extended P1, P2 connecting line. Points on the extended line outside of the P1, P2 segment can be colored in one of two ways.
- If the gradient is cyclic then the points on the extended P1, P2 connecting line cycle back and forth between the colors C1 and C2.
- If the gradient is acyclic then points on the P1 side of the segment have the constant Color C1 while points on the P2 side have the constant Color C2.
@see Paint @see Graphics2D#setPaint @version 10 Feb 1997

        public void paint(Graphics graphics) {
            Graphics2D g = (Graphics2D)graphics.create();
            // Workaround for OSX since we only get automatic clipping
            // on the content pane and below
            g.setClip(getMask());
            g.setPaint(new GradientPaint(0, getHeight()/2, new Color(0,0,0,0), getWidth(), getHeight()/2, new Color(0,0,0,255)));
            g.fillRect(0, 0, getWidth(), getHeight());
            g.dispose();
        }

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            }
            if (g instanceof Graphics2D)
            {
                final Graphics2D gg = (Graphics2D) g;
                int gh = 1;
                gg.setPaint(new GradientPaint(new Point2D.Float(0.0F, 0.0F),
                        new Color(553648127, true),
                        new Point2D.Float(0.0F, gh), new Color(0, true)));
                gg.fillRect(0, 0, w, gh);
                
                gh = h;
                gg.setPaint(new GradientPaint(new Point2D.Float(0.0F, 0.0F),
                        new Color(0, true), new Point2D.Float(0.0F, gh),
                        new Color(1610612736, true)));
                gg.fillRect(0, 0, w, gh);
            }
            g.dispose();

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        **/
        public void draw(Graphics2D g2, Point p)
        {
            int x = p.x - 25;
            int y = p.y - 25;
            GradientPaint gradient = new GradientPaint(
                x, y, Color.BLUE, x + 50, y, Color.WHITE);
            g2.setPaint(gradient);
            g2.fill(new Rectangle2D.Double(x, y, 50, 50));
            BasicStroke wideStroke = new BasicStroke(2.0f);
            g2.setColor(Color.black);

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            graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                RenderingHints.VALUE_ANTIALIAS_ON);


            switch(tabOrientation) {
                case HORIZONTAL: {
                    graphics.setPaint(new GradientPaint(width / 2f, 0, buttonBevelColor,
                        width / 2f, height / 2f, backgroundColor));
                    graphics.fill(new RoundRectangle2D.Double(0.5, 0.5, width - 1, height - 1 + buttonCornerRadius,
                        buttonCornerRadius, buttonCornerRadius));
                    break;
                }


                case VERTICAL: {
                    graphics.setPaint(new GradientPaint(0, height / 2f, buttonBevelColor,
                        width / 2f, height / 2f, backgroundColor));
                    graphics.fill(new RoundRectangle2D.Double(0.5, 0.5, width - 1 + buttonCornerRadius, height - 1,
                        buttonCornerRadius, buttonCornerRadius));
                    break;
                }

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        TerraTheme theme = (TerraTheme)Theme.getTheme();


        Color backgroundColor = theme.getColor(9);
        Color brightBackgroundColor = TerraTheme.brighten(backgroundColor);


        GradientPaint backgroundPaint;
        if (scrollBar.getOrientation() == Orientation.HORIZONTAL) {
            backgroundPaint = new GradientPaint(0, 1, backgroundColor,
                0, DEFAULT_THICKNESS - 2, brightBackgroundColor);
        } else {
            backgroundPaint = new GradientPaint(1, 0, backgroundColor,
                DEFAULT_THICKNESS - 2, 0, brightBackgroundColor);
        }


        setBackgroundPaint(backgroundPaint);

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            // Paint the background
            Color gradientStartColor = pressed ? backgroundColor : brightBackgroundColor;
            Color gradientEndColor = pressed ? brightBackgroundColor : backgroundColor;


            if (orientation == Orientation.HORIZONTAL) {
                graphics.setPaint(new GradientPaint(0, 1, gradientStartColor,
                    0, height - 2, gradientEndColor));
            } else {
                graphics.setPaint(new GradientPaint(1, 0, gradientStartColor,
                    width - 2, 0, gradientEndColor));
            }


            graphics.fillRect(1, 1, width - 2, height - 2);

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            Color brightBackgroundColor = TerraTheme.brighten(backgroundColor);
            Color darkBackgroundColor = TerraTheme.darken(backgroundColor);


            if (orientation == Orientation.HORIZONTAL) {
                graphics.setPaint(new GradientPaint(0, 1, brightBackgroundColor,
                    0, height - 2, backgroundColor));
            } else {
                graphics.setPaint(new GradientPaint(1, 0, brightBackgroundColor,
                    width - 2, 0, backgroundColor));
            }


            graphics.fillRect(1, 1, width - 2, height - 2);

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        int titleBarHeight = titleBarTablePane.getHeight();


        graphics.setPaint(titleBarBorderColor);
        GraphicsUtilities.drawLine(graphics, 0, 1 + titleBarHeight, width, Orientation.HORIZONTAL);


        graphics.setPaint(new GradientPaint(titleBarX + titleBarWidth / 2, titleBarY, titleBarBevelColor,
            titleBarX + titleBarWidth / 2, titleBarY + titleBarHeight, titleBarBackgroundColor));
        graphics.fillRect(titleBarX, titleBarY, titleBarWidth, titleBarHeight);


        graphics.setPaint(borderColor);
        GraphicsUtilities.drawRect(graphics, 0, 0, width, height);

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         compassPlot.setSeriesNeedle(5);
         compassPlot.setSeriesPaint(0, Color.white);
         compassPlot.setSeriesOutlinePaint(0, Color.white);
         compassPlot.setRosePaint(Color.green);
         compassPlot.setRosePaint(new GradientPaint(1.0f, 2.0f, Color.blue,3.0f, 4.0f, Color.yellow));
         compassPlot.setRoseHighlightPaint(Color.gray);
         compassPlot.setRoseCenterPaint(Color.black);
         compassPlot.setDrawBorder(true);

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            setColor((Color)paint);
        } else {
            this.paint = paint;
            nativeBrush = false;
            if (paint instanceof GradientPaint) {
                GradientPaint p = (GradientPaint)paint;
                if (!p.isCyclic()) {
                    return;
                }
                Color c1 = p.getColor1();
                Color c2 = p.getColor2();
                Point2D p1 = transform.transform(p.getPoint1(), null);
                Point2D p2 = transform.transform(p.getPoint2(), null);
                setLinearGradientBrush(gi, (int)Math.round(p1.getX()), (int)Math.round(p1.getY()), c1.getRed(), c1.getGreen(), c1.getBlue(), c1.getAlpha(),
                                           (int)Math.round(p2.getX()), (int)Math.round(p2.getY()), c2.getRed(), c2.getGreen(), c2.getBlue(), c2.getAlpha(), p.isCyclic());
                nativeBrush = true;
            }
            setStroke(getStroke());
        }
    }

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